Theoretical evidence for strong correlations and incoherent metallic state in FeSe

Markus Aichhorn; Silke Biermann; Takashi Miyake; Antoine Georges; Masatoshi Imada

doi:10.1103/PhysRevB.82.064504

Theoretical evidence for strong correlations and incoherent metallic state in FeSe

Markus Aichhorn^*, Silke Biermann, Takashi Miyake, Antoine Georges, Masatoshi Imada

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

189 Citations (Scopus)

Abstract

The role of electronic Coulomb correlations in iron-based superconductors is an important open question. We provide theoretical evidence for strong correlation effects in FeSe, based on dynamical mean field calculations. Our ab initio spectral properties first demonstrate the existence of a lower Hubbard band. Moreover, together with significant orbital-dependent mass enhancements, we find that the normal state is a bad metal over an extended temperature range, implying a non-Fermi liquid due to formation of local moments. Predictions for angle-resolved photoemission spectroscopy are made.

Original language	English
Article number	064504
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	82
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevB.82.064504
Publication status	Published - 2010 Aug 5
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.82.064504

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abstract = "The role of electronic Coulomb correlations in iron-based superconductors is an important open question. We provide theoretical evidence for strong correlation effects in FeSe, based on dynamical mean field calculations. Our ab initio spectral properties first demonstrate the existence of a lower Hubbard band. Moreover, together with significant orbital-dependent mass enhancements, we find that the normal state is a bad metal over an extended temperature range, implying a non-Fermi liquid due to formation of local moments. Predictions for angle-resolved photoemission spectroscopy are made.",

author = "Markus Aichhorn and Silke Biermann and Takashi Miyake and Antoine Georges and Masatoshi Imada",

year = "2010",

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T1 - Theoretical evidence for strong correlations and incoherent metallic state in FeSe

AU - Aichhorn, Markus

AU - Biermann, Silke

AU - Miyake, Takashi

AU - Georges, Antoine

AU - Imada, Masatoshi

PY - 2010/8/5

Y1 - 2010/8/5

N2 - The role of electronic Coulomb correlations in iron-based superconductors is an important open question. We provide theoretical evidence for strong correlation effects in FeSe, based on dynamical mean field calculations. Our ab initio spectral properties first demonstrate the existence of a lower Hubbard band. Moreover, together with significant orbital-dependent mass enhancements, we find that the normal state is a bad metal over an extended temperature range, implying a non-Fermi liquid due to formation of local moments. Predictions for angle-resolved photoemission spectroscopy are made.

AB - The role of electronic Coulomb correlations in iron-based superconductors is an important open question. We provide theoretical evidence for strong correlation effects in FeSe, based on dynamical mean field calculations. Our ab initio spectral properties first demonstrate the existence of a lower Hubbard band. Moreover, together with significant orbital-dependent mass enhancements, we find that the normal state is a bad metal over an extended temperature range, implying a non-Fermi liquid due to formation of local moments. Predictions for angle-resolved photoemission spectroscopy are made.

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IS - 6

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Theoretical evidence for strong correlations and incoherent metallic state in FeSe

Abstract

ASJC Scopus subject areas

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